package com.example.runtimepermissiontest;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button makecall = (Button)findViewById(R.id.make_call);
        makecall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
               if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE)!= PackageManager.PERMISSION_GRANTED){
                   ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.CALL_PHONE},1);
               }
               else{
                   call();
               }
            }


        });
    }

private void call() {
              try{
                  Intent intent = new Intent(Intent.ACTION_CALL);
                  intent.setData(Uri.parse("tel:10010"));
                  startActivity(intent);
              }catch (SecurityException e){
                  e.printStackTrace();
              }
            }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch(requestCode){
            case 1:
                if(grantResults.length>0&&grantResults[0]==PackageManager.PERMISSION_GRANTED){
                    call();
                }else{
                    Toast.makeText(this, "你的权限不足", Toast.LENGTH_SHORT).show();
                }
                break;
            default:
        }
    }
}